Messages and floral tributes at a memorial to nursery teacher Sabrina Moss in Kilburn. Photograph: Tolga Akmen/LNP/Rex Features

A 22-year-old man has been charged with the murder of a nursery teacher who was shot dead while celebrating her birthday.

Martell Warren is accused of killing Sabrina Moss, a mother-of-one who was shot in Kilburn High Road, north-west London, on 24 August, the Crown Prosecution Service said.

Warren also faces three counts of attempted murder and two counts of possessing a gun. He will appear at Highbury Corner magistrates court on Friday.

Moss was shot in the chest and Sabrina Gachette, also 24, remains in hospital with a gunshot wound. Her condition is not life-threatening. Police believe the pair were in the wrong place at the wrong time.

Gachette's family released a statement through police, saying: "Sabrina is a loving, courageous, wise and caring individual. She is not only a daughter and sister but an auntie. She was looking forward to the future but this has now been destroyed. No words can describe how we feel as a family.

"Sabrina is currently traumatised. We hope she doesn't only get through this but also the death of her beloved friend. We would ask anyone who saw what happened to Sabrina and her friend to help the police and tell them what they know."

Sarah Maclaren, of CPS London, said: "The Crown Prosecution Service has authorised the Metropolitan Police Service to charge Martell Warren, 22, with the murder of Sabrina Moss, who was fatally shot in Kilburn in the early hours of Saturday 24 August 2013.

"Mr Warren has also been charged with three counts of attempted murder and two counts of possession of a firearm with intent to endanger life."

Scotland Yard confirmed that Warren, from Hillingdon, west London, had been charged with Moss's murder and the attempted murder of Gachette.

The two other counts of attempted murder related to two men who suffered gunshot wounds and were initially arrested in connection with the shooting, before being released without charge.